Nike Women&#39;s AeroSwift 2" Running Shorts 100% Polyester Pull On closure The lightweight, low-profile mesh waistband with internal drawcord is made with two layers of laser-perforated elastic to increase airflow in this high-heat zone. The Dri-FIT liner features a combination of jersey fabric in front for support and stretch mesh fabric in back for lightweight breathability. Inner back and front right pockets have a waterproof barrier that keeps IDs, keys and other stored items dry and protected. 2" inseam (based on size medium). Reflective elements enhance visibility in low light 86% polyester/14% spandex